package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {
    String url = "https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;

    @Override
    public User login(UserLoginDTO dto) {
        Map<String, String> paramMap = new HashMap<>();
        paramMap.put("appid", weChatProperties.getAppid());
        paramMap.put("secret", weChatProperties.getSecret());
        paramMap.put("js_code", dto.getCode());
        paramMap.put("grant_type", "authorization_code");
        String result = HttpClientUtil.doGet(url, paramMap);
        JSONObject jsonObject = JSON.parseObject(result);
        String openid = (String) jsonObject.get("openid");

        if (openid == null) {
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        User user = userMapper.getUserByOpenid(openid);
        if (user == null) {
            user = User.builder()
                    .openid(openid)
                    .name(openid.substring(0, 5))
                    .createTime(LocalDateTime.now())
                    .build();
            Long id = userMapper.insertUser(user);
            user.setId(id);
        }
        return user;
    }
}
